Disclosed are a laser scanning device, a radar device, and a scanning method thereof. The laser scanning device comprises a scanning prism comprising a plurality of scanning mirror surfaces, wherein the plurality of scanning mirror surfaces rotates about a scanning axis, a normal of each of the scanning mirror surfaces forms a certain angle with respect to the scanning axis, and the angles thereof are not all the same; a transceiving component comprising a laser transmitting unit and a laser receiving unit, wherein the laser transmitting unit generates a scanning line by rotation of the scanning mirror surfaces, and the same laser transmitting unit generates a plurality of scanning lines by rotation of the scanning prism.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The laser scanning device according to claim 1, wherein the at least two transceiver assemblies further comprise a third transceiver assembly and a fourth transceiver assembly, the third transceiver assembly is disposed right above the first transceiver assembly, and the fourth transceiver assembly is disposed right above the second transceiver assembly.
3. The laser scanning device according to claim 1, wherein the laser scanning device comprises at least three transceiver assemblies which are disposed around the scanning prism and the fields of view of which are abutted upon each other successively to form a continuous field of view.
4. The laser scanning device according to claim 3, wherein at least some of the transceiver assemblies are symmetrically disposed relative to the scanning axis.
5. The laser scanning device according to claim 3, wherein spatial-attitude angles of the transceiver assemblies relative to the scanning axis each are different.
6. The laser scanning device according to claim 3, wherein axial heights of the transceiver assemblies along the scanning axis are different.
7. The laser scanning device according to claim 1, wherein the scanning prism comprises three, four, five or six scanning mirror surfaces.
8. The laser scanning device according to claim 7, wherein the space angles are decremented by a same angular difference.
9. The laser scanning device according to claim 3, wherein each of the transceiver assemblies comprises a plurality of laser emitting units and a plurality of laser receiving units, wherein each laser emitting unit is configured to emit a laser beam, and angles are formed between any two the laser beams emitted by the laser emitting units of the same transceiver assembly.
11. The laser scanning device according to claim 9, wherein the same scanning mirror surface is configured to not only reflect the laser beams, but also receive a signal light returned after the laser beams are irradiated on a target, and to reflect the signal light to the laser receiving unit corresponding to the laser emitting unit emitting the laser beams.
14. The method according to claim 13, wherein the at least two transceiver assemblies further comprise a third transceiver assembly and a fourth transceiver assembly, the third transceiver assembly is disposed right above the first transceiver assembly, and the fourth transceiver assembly is disposed right above the second transceiver assembly.
15. The method according to claim 13, wherein at least three transceiver assemblies, which are disposed around the scanning prism, and the fields of view of all the transceiver assemblies are abutted upon successively to form a continuous field of view, are provided.
16. The method according to claim 13, wherein the scanning mirror surface reflects, to the laser receiving unit corresponding to the laser emitting unit generating the scanning line, a signal light corresponding to the scanning line and returned by a target.
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April 18, 2018
January 17, 2023
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